Grease-gun.



GREASE GUN.

APPLic/xrlon FxLEn fria` 8. w11.

Patented Apr. 23, 1918.

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UNTTED STATES PATENT OFFICE.

HORACE GREELEY MORROW, BERKELEY, CALIFORNIA, ASSIGNQR TO STANDARD OIL COMPANY, OF RICHMDN'D, CALIFORNIA, A CORPORATIGN WMn-TWQWWTA GREASE-GUN.

Specification of Letters Patent.

Patented Apr. 23, 1918.

Application filed February 8, 191'?. Serial No. 147,413.2.

.. :for applying lubricating oil or grease, of

comparatively soft consistency, to the mov in;r parts of various .forms of machinery, und are most extensively used in the lubrication of automobiles or othenmotor vehicles. The object of the present invention is to provide such a device which'mnybe conveniently carried, loaded with oil or grease, in the tool-box or elsewhere in the vehicle, without danger of leakage or spilling of the contents. As such, the device constitutes an einer ency grease-gun, for the reason that it may e carried in the automobile, in a con-` ditionJ-eady. for instant use. The necessity for carrying an empty grease-gun, and a separate container for the grease, is thus ohviated. A further objectof the invention is to provide a grease-'gun which occupies as little space es possible when loaded, a. factor which adds to its convenience.

In the eccompnnylng'drawings, and in the following specification, the invention is illustrnted and described in its preferred form, out it is to be understood that changes, within the scope of the claims hereto appended, may he made' in the form and construction without departing from the spirit of the invention. With this in view` the invention will now be ullydescribcd with reference to the accompanying dpawings, vvherein-f- Figure 1 is a part sectional vlevtion of my improved grease-gun, showing the position of the parts when the frun is loaded.

2 is a similar view showing the position of the parts when the gun is in operation.I

Referring' more particularly to the drawings, the reference numeral 1 designates n hai-rel. to the ends of whichuare secured es by means of screw thv-ends, end caps Q and 3.

The cap 2 has extending from it :L tip or nozzlell, curved es shown, and terminating in a laterally directed discharge aperture 5. The oppcsite'c'ap 3 is formed with a central guide aperture 6.

Viitlin the barrel is n. piston, formed in any well known manner, as, for exemple, by a pair of oppositely disposed cup leathers 7, a hack plate S between said leathers, and a. pair offront plates 9, one Within the cup of each leather, the whole being securely held between two nuts 10 screwed upon the end of the lineally disposed piston rod 11.

Said piston rod 11, which extends through the guide 6 in the head 3, is jointed nt two places, 12 und 13, adjacent the piston, and

is thereby enabled to be folded over outside said head 3, and to lic parallel with and ed scent the side of the barrel 1, as shown m 1g. 1, when the piston is fully vwithdrawn toward said head, in which position the.

n is loaded, ready for use. The hinge )oints 12 and 13 in said rod are formed upon one side with square corners 14, to prevent bending inthe other directionat said joints, so that. the rod 11 will not tend to buckle. inside the barrel, when pressure is applied thereto. the edges of the respective caps' 2 and 3, within which said rod llylies whenfolded over.

The rod 11 is longer than necessary to operate the piston throughout its entire stroke, and when folded over, as shown in Fig. 1, the end of said rod, which carries a. suitably formed handle 17. extends out ,beyond the end of the barrel approximately as far as the nozzle 4. A loop or yoke 18, preferably formed of spring wire,.is pivotally connected with said rod 11 at 19, near its end, the wire of said loop being passed through a transverse hole in said rod. A csp 20 is carried by the outer end of said loop 18, said cap being adgpted to fit over the end of the nozzle 4, sind close the discherge aperture 5 therein. Said cap 20 is preferably formed with a groove terminating in a shoulder 21, to insure the proper positioning of the cap upon the end of the nozzle; and said cap is retained upon said nozzle by the spring in the unsupported end ortion of the rod 11, and also by the spring m the loop 18, whose side members are preferably slightly bowed for this purpose.

'1t will thus be seen that !he gun may Notches 15 and 16 are formed in -the barrel; and a closing be carried fully loaded and ready for emergency use, and still occupy small space, by reason of the folded position of the rod 1i; and also While loaded, its discharge is covered and protected.

I claim 1. A grease-gun comprising a barrel having a discharge aperture at one end; :i piston within said barrel; an operating rod secured. to said piston and extending throu rh the other end of said barrel, said rod adjacent the piston being jointed to'enable it to lie substantially parallel with and adjacent the outside of' said barrel when the piston is retracted therein; and means carried by the free extremity of said rod for closing the discharge aperture of the barrel.

2. A grease-gun comprising a barrel having a discharge aperture at one end; a piston Within said barrel; an operating rod secured to said piston and extending through the other end of said barrel, said rod adjacent the piston being jointed to enable it to lie substantially parallel with and adjacent. the outside of said barrel when the piston is retracted therein; and said rod having a length sufficient to carry its free extremity into proximity with the discharge aperture of the barrel, when said rod is l Iing beside device or said dis-y chr aperture, carrie by the free extremity o the rod.

3. A ase-glm comprising a barre! having aid1scharge aperture at one end; a pisfon Within said barrel; an operating rod se' 1,2ee,eeo

cured to said piston and (attending ihr I the other end of said lnrrel; pair o! spaced pivotal. joinls in said vnd adjzwenf. the piston to permit the saine to be defiertwl out of a Straight line, in one direction only'. and enable it to lic substantially parait@ with and adjacent to the outside o' the im;

rel when the piston is retracted; and meancarried by the free extremity of said rod ior closing said discharge aperture.

4. Agrease-guncomprising .fibnrrel5 lic-:ids

associated with thc ends of said barrel and -ing throiigh said guide; a pair of spaced pivotal joints in said. rod adjacent the piston to permit said rod when the piston is fully re tracted, to lie paralisi with and adjacent to the outside of the barrel and within the said notches in the heads thereof; and means carried by the free extremity of said rod for closing the discharge orifice of said nozzle.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

H GRACE GREELEY MORROV,

Witnesses:

WM. F. Boo'ru, D. B. RICHARDS. 

